Lens Lab
    Carl Zeiss Vario-Sonnar 45-90 mm f/ 4.5 C645
    Carl Zeiss Vario-Sonnar 45-90 mm f/ 4.5 C645

    Carl Zeiss Vario-Sonnar 45-90 mm f/ 4.5 C645

    45–90mm · f/4.5

    Overview

    The Carl Zeiss Vario-Sonnar 45-90 mm f/4.5 C645 is a medium-format zoom offering prime-class sharpness, contrast, and color. Its constant f/4.5 aperture is slower than primes, limiting low-light use. Build is solid but heavy at 2.6 lbs, with a 95mm filter thread. It suits wedding, location, and studio photographers needing zoom flexibility without sacrificing image quality.